Data Representation Flashcards
What do the height of bars represent in a bar chart?
Frequencies.
What type of data is represented in a bar chart?
Nominal.
Are the bars separated or touching in a bar chart?
Separated.
What type of data is represented by a histogram?
Continuous.
Are the bars separated or touching in a histogram?
Touching.
What does a histogram show?
Frequency of Fata in successive numerical intervals.
What is plotted on the y axis of a histogram?
The DV.
What is polled on the x axis of a histogram?
The IV.
What type of data is represented on a frequency polygon (line graph)?
Continuous.
What is a frequency polygon (line graph) useful for?
Comparing sets of data as it can be used with 2 or more sets.
When is a contingency table often used?
To analyse the relationship between two continuous variables.
What do contingency tables have an equal number of?
Rows and columns.
What are scatter graphs (scattergrams) a good visual picture of?
The relationship between two variables.
What do scatter graphs (scattergrams) aid the interpretation of?
The correlation coefficient.
